hafely



(No Model.)

A. 0 HAFELY.

BOOK GLASP.

No. 287,123. Patented oatqzs, 1883.

N. PETERS. Plmm-uma n h Washinglnm u C.

NITED ST TES PATENT OFFICE.

ALFRED o. HAFELY, on NEW YORK, N. Y.

BOOK-CLASP.

- SPEGIFICATION forming part of Letters Patent No. 287,123, datedOctober 23, 1883.

' Application filed August 30, 1883. (No model.)

To all whom it may concern.-

Be it known that I. ALFRED G. HAFELY, of the city and State of New York,have invented an Improvement in Book-Clasps, of which the following is aspecification.

Book-clasps have been made of two parts that slide one upon the other,so as-to be extensible, and springs, screws, and clamps have beenapplied to hold the parts when extended. In these clasps there is a lackof uniformity in the appearance of the two parts of the swinging clasps,because one part slides within a tube or a box upon the other part ofthe clasp, and these forms involve more expense than my improved clasp.

In my improvement I am able to make the.

two parts of the extensible clasp of the same or similar shapes, and tolessen the expense of construction, and to render the clasp strong,durable, and symmetrical.

In the drawings, Figure 1 is a sectional elevation of the clasp with theextension-loops in a curved form. Fig. 2 is a similar view of a claspwith the extensible portions of scroll shape. Fig. 3 shows a pawl that Iemploy for holding the clasp at any place to which it may be adjusted.Fig. 4 is a side elevation, partially in section, of the same; and Fig.5shows my improvement with clampingeccentrics applied to the clasp.

The sheet-metal clip-pieces a b are adapted to be secured upon the edgesof the book-cover. One of them is provided with studs or hooks c, theother with the hinges d. Thetwo-part clasp e f is connected to andswings uponthe hinges d, and the parts of are united together by therods *5 1', that pass through holes or openings in the respective partsof the clasp. These rods form slides upon which the parts e f of theclasp can be drawn apart or forced toward each other to lengthen orshorten the clasp. These rods z 11 are preferably made with heads atone. or both ends, and usually the rods will be soldered to the andslide through the other part.

part 6 or f In order to extend or to contract the clasps, 4 5

screws 3 and 4, that are connected with the case e, or similar to thedevice in my Patent No. 252,100; or one or two clamping-eccentrics maybe used to press upon the sides of the stud n, as shown in Fig. 5; butfIprefer to notch the stud a and connect the stud 0 with the case 6, andto'fasten into this case one end of the spring-pawl p, the other endpressing against the notched stud n, so as to hold the same at any placeto which it may be moved. The pawl is liberated by pressure upon thefree end of the spring, such free end extending outside the case 6, andpreferably to the side of the stud opposite to that containing thenotches, so that the spring-pawl is easily pressed out of the teeth. e

I claim as my invention- 1. The guide-rods i, in combination with thetwo-part extensibleclasp e f, and the connecting'devices for attachingthe clasp to the book, substantially as specified.

2. The extensible clasp e f, guide-rods 13,

and hinges d, in combination with the springpawl 12 and the case 6 forthe same, substantially as set forth.

Signed by me this 28th day of August, A. D. 1883.

ALFRED O. HAFELY.

Witnesses;

GEo. T. PINoKNEY, WILLIAM G. MOTT.

